I'm guessing you didn't own an original Switch? If so there are a ton of brilliant first party Nintendo games I would recommend.
Breath of the Wild and Tears of the Kingdom are amazing and run so much better on the S2, same with Mario Odyssey. Animal Crossing is getting a S2 upgrade soon, even without that the loading times are much improved (but still a pain).
Mario 3D World is probably my favourite Mario of recent times (yes it was on Wii U) but it's such a fun time, especially local multiplayer. Mario Wonder is also ace if you prefer side scrolling platformers.
DK Bananza is probably the biggest exclusive, heard great things and got positive reviews but I'm waiting for a discount.
Metroid Prime 4 has mixed reviews, depends how you feel about Metroid and also the janky open world bit sounds like filler and a reflection of the troubled development. Supposedly looks stunning from an art direction perspective on S2.